William silver



(NoMoael.) 2 sheets-s118451; 1. W. SILVER. ANIMAL SHEARS.

No. 494,034. Patented Mar. 21, 1893.

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(No Model.) v 2 Sheets-Sheet 2.

W. SILVER. ANIMALHBARS.

Patented Mar. Y21, 1.893.

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PATENT OEE-ICE.

WILLIAM SILVER, on TAMWORTH, NEW SOUTH WALES.

"sPEcrFIM'cATIoIv forming'paft orLetters Patent No. 494,034, ydated March 21, 1893.

.Application tiled. deptember 10,-18-972. Serial No. 4453548. (No model.) Patented in England February 4, 1891, No. 2,036; in l` Newsourhwngsnpniz. 1891,110. 2,1897, and in Queensland July s,1s91,N0.1,35s.

ald it may concern,.- Be it known lthatiI, WILLIAM SILVER, en-

gineer,ga,subject of the; Queen of Great Britain, residingvv at Tamworth, in the Colony of NewSouth Wales, have invented new and useful Improvements inMa'chines for Shearing and Clipping-Wool :and Cutting Hair, (for 1 whichI haveobtained Letters Patent in Great Britain, No..2,036, dated February 4, 1891; in

New South: Wales, No. 2,897, dated April 2, 1891, and in Queensland, No. 1,358, dated July 8, 1891,) of which the following is a specification.V

f thejNibatingbar in-itsvworking position with auninixnum iQfrictiom and in the application of device to and the combination of the sarnewith known machine shears whereinthe vibrating leyer is either, (a) of the first class,

, or v(b) of the third class, and also in the application-ofgsnchfdevice to and the combination o; the same with anordinary hand clipper.

The objects of the invention are mainly to ini-prove .themechanism whereby tensional .Y pr`essurej:is applied and to `lessen the friction incidental tothe motion Vot the vibrating bar, the @utterand other moving parts,-and Ythe heatingconsequent upon that motionr InY the accompanying drawings, Figures 1 and 2 are respectively a longitudinal section anda planillustratingtheapplication of the invention to a machineishearwherein the vibrating bar is a lever of the iirstclass; Figs.

3 and 4 a similar longitudinal section and transverse section respectively relating to a modified construction of machine of the same class. Figs. 5, 6,and 7 are illustrativeof the application of Athe invention to an ordinary hand clipper. Fig. 8 (fragment) shows a modication of the construction shown in Figs. 1 and 2; and Figs. 9, 10 (fragment) are details relating to Figs. 1 and 3 respectively. Fig. 5 is a longitudinal section, Fig. 6 l a transverse section, and Fig. 7 a top plan.

Similar gures refer to similar parts throughout the several corresponding figures, except when the context otherwise requires.

There is nonovelty inthe construction or combination of the main shaft, disk.- crank thereon, vibrating lever, forked connecting `rrod, and central spindle as shown in Figs. 1

The construction above mentioned with reference to Figs. 1 to 4 is comprised in United States Letters Patent granted to me, No.

ing link motion for vibrating the knife-bar.

lever as shown in Figs. 1, 2, and 3 any other known mechanical movement by which the same result can be produced.

Rotary motion is communicated to the main shaft of the machines shown in the first sheet ofdrawings by any suitable form of liexible shafting, or by a self-contained motor driven by air or other iuidor electricity.

The device aforesaid in which and infthe application ofwhich the invention consists is shown in its modifications as applied to machine shearslin Figs. 9 and,10, as in Fig. 9 it consists of a turned spindle l capable of rotationin bearings, upon which spindle or bracket' an arm 2 is formed, and as in Fig. 10 it consists of a fixed Spindle 3 turned so that the hub 4 of the bracket arm 5 may rotate about it.

Referring to Figs. 1, .2, and 9: The vibrating bar 7 moves about the axisof the spindle 1 as a center, and at its rear kend is supported on the pointed end 8 of the bracket arm 2. The spindle l and the bracket-arm 2 are immovable except as to a vibratory motion about the axis of the spindle and the vibrating bar 7 is adjustable in a vertical directionrelatively to the parts 1 and 2 about the point 8 as a center, the holein the bottom ofthe cup 9 through which the Spindle `passes being made suiciently large to allow of this adjustment. Tensional pressure is applied to the vibrating bar 7 by the cap 10 screwing through a tapped collar in the case 12, which cap is spherical on the bottom end and takes its seating in a saucer piece 13 whence the pressure is transmitted to the vibrating lever through a ball race 14. In some cases a spring such as 16 Fig. 12 is inserted between Ice I the end of the bracket arm 2 and the vibratlbratves in bearings which have an immovable axial line. The lower bearing 18 is set in the machine case; it terminates at the foot in a shoe en which the lower end of the spindle 1 moves. The upper bearing is bored right through the cap 10 or sufficiently far to allow maximum variation of tension. It will be seen that the vibrating lever isfor the purposes of power transmission a lever of the first class and for purposes of tension application a lever of the third class.

Referring to Figs. 3, 4, and 10: The essential characteristics of the design are similar to those before described. The spindle 3 is however, ixed in the case, and the bracket arm 4 is formed with a hub 5 which rotates about the turned portion of the spindle 3. The tension cap 23 may screw either onto the top end of the spindle as shown or through a collar in the vcase as already described. 24 is a spring in compression tending to lift the vibrating bar oft' the bracket arm. The crosshead pin 43 is turned to two diameters, and the extremities of the connecting bar fork pieces are cut out like Spanner jaws, (Figs. 1 and 3,) which grasp the ends of the smaller portions, the larger portion being cylindrical and fitting with working freedom a hole in the vibrating lever. In Figs. 1 and 2 the crosshead pin is shown turned all over, while in Fig. 3 it is shown turned in the centralportion but squared at the ends. Heads may be formed on the pin if desired, but they areunnecessa-ry. p

The advantages obtained by the use of such a crosshead pin in` lieu of amachine screw or a common headed pin are apparent; it is equally as efficient for maintaining the position of the parts, and it is such that they may be readily taken apart and reset.

Referring to Figs. 5, 6 and 7: The bracket arm 39 which is on the spindle 40 bears on the top or movable cutter-plate 41 for which the spin dle 40 forms the pivot, there being a strap 42 whereby1 the movable plate is connected to the lower or fixed plate. In an alternative arrangement, a separate pivot is used and the spindle 40 passes through aslot in the cutting plate or in the lever by which the latter is actuated. The tension cap 43 screws through a tapped hole in the part 42 and forms a bearing for and acts on the top end of the spindle. If preferred, there 'may be provided at the point of contact between the nut and the spindle a ballfrace and a series of antifriction balls. The-lower extremity of the spindle iits in a hole forming a bearing (which may be in a steel bush) in the lower plate 44 or in the casing, the hole being either bored right through or sufficiently deep to allow for the depression of the spindle (and consequently of the bracket arm) by the tension cap.

lWhat I do claim as myinvention, and desire to secure by Letters Patent, is-

1. In a shearing and clipping machine, the combination with the shell `or casing, of a spindle mounted in bearings formed in said casing, the `vertically adjustable cutter-bar vibrating about said spindle as a center and pivotally supported at its rear end upon a bracket arm extending fromsaid spindle,sub stantially as described.

2. In a shearing and clipping machine, the combination with the shell or casin g, of a spindle mounted in bearings formed in said casing, the vertically adjustable cutter-bar vibrating about said spindle as a center and pivotally supported at its rear end upon a bracket arm extending from said spindle, and a tension cap tapped into the upper bearing and acting to depress the cutter-bar,substan tially as described.

3. In a shearing and clipping machine, the combination with the shellor casing, of a spindle mounted in bearings formed in said casing, the vertically adjustable cutter-bar vibrating about said spindle as a center and pivotally supported at its rear end upon an upwardly turned pivot point formed at the rear end of a bracket arm extending 'from the spindle, and a tension cap tapped into the up-V per bearing and acting to depress the forward end of the cutter-bar, substantially as described.

4. In a shearing and clipping machine, the combination with the shell or casing of a spindle mounted in bearings formed in said casing and provided with a fixed rearwardly extending bracket arm rotating with' said spindle and provided at its extremity with an upwardly turned pivot point, the cutter-bar pivotally supported near its center upon the spindle and at its rear end pivotally supported upon the said pivot point, and a screw threaded cap tapped in the upper bearing and acting to depress the forward end of the cutter-bar, substantially as described.

W. SILVER.

Witnesses:

J. PATTERSON, Solicitor, Notary Public, Tamworth.

C. L. CHAMPION, Arta. Clerk to Jno. Patterson, Solr., Tamworth.

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